baber/WOPTO huggingface dataset:
Patent GB-1247512-A (GB)
Title: Improvements in or relating to gas-cushion vehicles for operation over water
Inventor: TRILLO ROBERT LONGLEY
IPC: B60V1/00
Filed: 1967-11-02
Abstract: 1,247,512. Air-cushion vehicle; water jet propulsion. HOVERMARINE Ltd. 31 Oct., 1968 [2 Nov., 1967], No. 49848/67. Headings B7K and B7V. An air-cushion vehicle 1 has an engine 13 coupled to drive a water impeller 11 and a fan 15 at least part of the air delivered by which may be used to propel the vehicle. The vehicle 1 may have rigid hollow side walls 3, 4, extending in a fore-and-aft direction, which, when the vehicle is used over water, extend below the surface 5 to contain, with front and rear retractable flexible skirts, an air-cushion 6. Towards the rear of each side wall is an open-ended duct 8 which contains a two-stage water impeller 11 powered by an engine 13 to draw water in through the opening 9 at one end and project it backwards through the other end 10 in order to provide a propulsive thrust. The openings 9 may be closed by blanking-off plates (23), Fig. 7 (not shown) when the vehicle is travelling over land or swamp. The engine is contained in a nacelle 14 behind the impeller and so positioned that driving shaft 12 is downstream of the impeller 11. On each shaft 12 between the engine and the impellers is a pair of fans 15 to deliver pressurized air through ducting 26 to form a cushion 6. Additional lift fans may be provided and these may be driven by engines separate from engines 13. The skirt 7 has a U-shaped profile and may be raised or lowered by means of a reversible electric motor 28 which winds in or pays out the front edge, and the front skirt (25), Fig. 1 (not shown) may be retracted or extended by a tie-cord and electrical actuator system. The side walls 3, 4 may be connected to the vehicle by means of a suspension system and may each have a longitudinal groove to contain an envelope which may be inflated to form a skirt by bleeding off air from the cushion and deflated by venting to the atmosphere. When the vehicle is travelling over ice the impellers may be kept working since they will consume little power. The skirt 7 is raised to allow the cushion air to propel the craft and also steer it by means of rudders 17 and additional fans may be clutched in or further fans may be opened up which have been previously absorbing minimum power by being " boxed in " in a near vacuum or the pitch of the fans may be coarsened. Over rougher ice the skirt 7 may be lowered to increase the lift and the side wall envelopes (22) may be inflated. In different embodiments, not illustrated, the side walls 3, 4 may carry wheels in addition to or instead of the envelope (22) or the side walls may be replaced by flexible skirts and the ducts 8 in this case are formed in wall structures in the form of skids or skegs. Additionally the fans 15 and/or the additional fans may vent air rearwards directly or they may be air screws.
Patent GB-1491043-A (GB)
Title: Powdered fluoroelastomers
IPC: C08F214/22
Filed: 1974-11-18
Abstract: 1491043 Powdered fluoroelastomers E I DU PONT DE NEMOURS & CO 18 Nov 1974 [19 Nov 1973] 49883/74 Heading C3P A vulcanizable fluoroeleastomer powder comprises (1) 65-90% by weight, based on the total polymer content, of a first-stage copolymer consisting of (a) a copolymer of 65-100% by weight vinylidene fluoride and a second monomer selected from pentafluoropropene, hexafluoropropene, chlorotrifluoroethylene and a C 2-4  perfluorinated alkyl vinyl ether, the weight ratio of vinylidene fluoride being 0À67-3 : 1; and (b) 0-35% by weight of tetrafluoroethylene the resulting first stage copolymer having a crystalline melting point of less than 60 C.; and (2) 10-35% by weight, based on the total polymer content, of a second-stage polymer of at least one of the monomers of the first stage copolymer made in the presence of an emulsion of the first stage copolymer, said second-stage polymer, if made separately, having a crystalline melting point of more than 120 C. The powder may be produced by copolymerizing an aqueous emulsion comprising the monomers of the firststage coplymer to at least 90% monomer conversion, polymerizing in the same emulsion at least one of the same monomers as in the first stage, flocculating the resulting dispersion, and spraying the dispersion at 121-177 C. The process may be carried out batchwise in the same reactor or in a continuous, cascade, tworeactor system. In such a system the required monomers are introduced into the first reactor and maintained at 50-130 C. and at a pressure of 250-1,500 p.s.i.g. The product stream is withdrawn at the same rate as the materials are introduced and passed to a second reactor and maintained at the some temperature and pressure as in the first reactor. Additional vinylidene fluoride and/or tetrafluoroethylene are introduced to the second reactor, the second stage polymers thus being formed in the presence of particles of the first-stage polymer. The latex effluent from the second reactor may be flocculated by adding potassium alum or triethylamine. An anti-tank agent, e.g. silica, calcium silicate or calcium carbonate may be added before or during the spray-drying operation. The dispersion is preferably spray-dried in a stream of hot air. The specific examples describe the preparation of powders comprising 71% by weight of a copolymer of vinylidene fluoride (VF 2 ) and hexafluoropropene (HFP) (58 : 42) and 29% by weight of a second copolymer of VF 2  and HFP (91 : 9) (1); 78% of a copolymer of VF 2 , HFP and tetrafluoroethylene (TFE) (58 : 22 : 20) and 22% of a copolymer of VF 2 , HFP and TFE (91 : 8 : 1) (2); and 81% of a copolymer of VF 2 , HFP and RFE (58 : 22 : 20) and 19% of a copolymer of VF 2 , HFP and TFE (31 : 4 : 65) (3). The powder of Example 2 is mixed with carbon black, calcium hydroxide, magnesium oxide, bisphenol and benzyltriphenylphosphorium chloride and compressionmoulded.
Patent GB-1075615-A (GB)
Title: Improvements in foucault current slowing down devices
IPC: H02K49/04
Filed: 1964-12-08
Abstract: 1,075,615. Brake dispositions. SOCIETE LABAVIA. Dec. 8, 1964 [Dec. 10, 1963], No. 49943/64. Heading B7H. [Also in Division H2] An eddy-current brake is mounted round the flexible propeller shaft 5 of a vehicle, the rotor 11 being driven by a flexible driving diaphragm 14 from the gear-box shaft 2. The brake consists of discs 11 rotating on bearings 12 on either side of fixed field coils 8.
Patent GB-499652-A (GB)
Abstract: 499,652. Ignition apparatus and systems. SOC. ANON. SFRUTTAMENTO BREVETTI ELETTROMECCANICI. July 23, 1937, No 20468. Convention date, Dec. 19, 1936. [Class 7 (iv)] Separate interrupters actuated by a single cam are in circuit with magneto and batterycoil circuits. A member 18 with a central disc-portion having depressions 16 lifts one of the interrupters out of operative position and by means of a bridge 17, simultaneously switches the corresponding high-tension circuit out of circuit with the distributer 19.
Patent GB-1300520-A (GB)
Title: Spark plug seal gaskets
Inventor: RAUSCH JOHN THEODORE
IPC: H01T13/36
Filed: 1971-10-28
Abstract: 1300520 Joint-making packing GENERAL MOTORS CORP 28 Oct 1971 [12 Nov 1970] 50185/71 Heading F2B [Also in Division F1] A sparking plug ceramic-to-metal sealing gasket 9 comprises an annular sintered compact which has a density of 6À95 to 7À05 gm./c.c. and is formed from powdered iron of a purity of at least 99À4%. In the manufacture of the sparking plug, the ceramic insulator together with the gasket 9 and, if required, a further gasket 10 are first inserted into a steel shell 2. Axial pressure is applied to the shell to compress the gasket or gaskets, the material of the shell being softened at a thin section by passing an electrical current through the shell to cause resistance heating.
Patent GB-1072649-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D75/18
Filed: 1964-12-10
Abstract: 1,072,649. Reaping machines. TEXAS INDUSTRIES Inc. Dec. 10, 1964 [Dec. 24, 1963], No. 50417/64. Heading A1F. In a tractor-mounted mowing machine of the kind wherein the mower-bar can "break back", by rotation about a vertical axis, upon encountering obstructions, part of the drive-transmission to the cutter carries a member which co-operates with another member on the frame of the machine to produce an audible signal upon break-back of the respective parts. The mower-frame comprises two parts 1, 2, a fixed platform 1 which is mounted on the tractor hitch-linkage, and a movable frame 2 pivoted to the platform about a vertical pivot 4 and locked to it by a spring-loaded roller 56 nesting in an aperture in a cam 57, the cam being rotatable by a lever 49, connected to the mower bar, upon excessive resistance being encountered thereby. When this occurs, a bell 42 carried by the mower-pitman 37 encounters a spring- supported steel-ball 45 on the platform and produces a continuous ringing. The drive to the cutter-bar is taken from the tractor to a pulley 31 carried by a shaft 29 eccentrically mounted in a bearing 12. The bearing 12 is mounted in a frame 6 which is also pivotal about the pivot 4 and carries a bearing 9 for the crank-shaft 33 which drives the pitman and which is driven from the pulley 31 by V-belts 34. The shaft 29 can be adjusted relatively to the shaft 33, to tighten the V-belts, by rotation of the eccentric bearing 12 through a handle 16, the bearing being formed with circumferential teeth (Fig. 4, not shown) engageable by a pawl to prevent accidental rotation of the bearing.
Patent GB-1525235-A (GB)
Title: Servo pressure operated actuator arrangements
IPC: F15B9/09
Filed: 1974-11-21
Abstract: 1525235 Fluid-pressure servomotor systems LUCAS INDUSTRIES Ltd 6 Nov 1975 [21 Nov 1974] 50455/74 Heading G3P [Also in Divisions F1 and F2] A valve 14 which may control fuel flow to a gas turbine is operated by a piston 15 restrained against sliding movement by applying fluid-pressure to a port 42 to urge the piston into increased frictional engagement with its cylinder whenever an electrical control signal falls below a predetermined value. The piston is displaced in normal operation by a pressure differential between passages 17, 18 communicating with a hinged control element 22 operated by a torque motor 24, a feedback signal from a transducer 31 being fed back to the motor which operates against a torsion spring bias. If the current supply to the motor fails, the element is moved by the bias to operate a relay valve allowing pressure to be applied to the port 42. A port 43 communicating with a return line 30 is situated opposite to the port 42. The torque motor may be supplied with signals corresponding to power demand and turbine operating conditions.
Patent GB-1508605-A (GB)
Title: Excavating vehicles
IPC: E02F9/02
Filed: 1975-11-19
Abstract: 1508605 Vehicle suspension; stands and supports RICHARD SMALLEY (ENG Ltd) 19 Nov 1975 [21 Nov 1974] 50477/74 Headings B7D and B7J An excavating machine has a pair of wheels 1a, 1b mounted on pivoted cantilever arms which are each secured in position by a pin inserted in one of a series of apertures 67 so that the wheels are separately vertically adjustable for keeping the machine upright on an incline, each cantilever arm also having mounted thereon near the respective wheel a foot 17a, 17b which is movable between ground-engaging and retractedpositions. Each foot 17a, 17b is connected to a leg 15a, 15b which is mounted with provision for telescopic adjustment in a sleeve carried by an arm 13b pivotally mounted on the cantilever arm so as to be movable to and from the groundengaging position by means of an hydraulic ram. A further pair of feet 18a, 18b are carried by adjustable legs 43.
Patent GB-1284420-A (GB)
Title: Improvements in or relating to display fitments
Inventor: KAMMLER FRITZ
IPC: A47F11/02
Filed: 1969-11-12
Abstract: 1284420 Display fitments F KAMMLER 12 Nov 1969 [1 April 1969] 51081/69 Heading G5C A display fitment is formed from a flat blank (Fig. 5) by folding into a tubular frame. Tabs 9 are engaged in slots 3a, and tabs 4a are engaged in slots la; flap section 8 is shorter than the flap section 7 and the depth H of flap section 6 is greater than the depth h of the flap section 3, so that apertures 10 are formed at the inner corners of the fitment on the back of the fitment to receive members whereby the fitment may be connected to another or feet. The fitment may have a rectangular or elliptical panel 11 recessed at 1 la, and the back of the frame may be covered by an advertising screen. The fitment may comprise an upright rectangular frame having several vertically spaced panels 11, all but the lowermost being supported on cranked brackets inserted in slots in the frame uprights 1. The fitment is securable either to a similar display fitment or to an attentionattracting arrow 14 (Fig. 4) by means of a generally E-shaped member. The generally E-shaped member 15 comprises (Fig. 14) V- section limbs 15a and 15c, and an X-section limb 15b between which fitment corners are secured, but may comprise an E-shaped member 17 (Fig. 12) which connects pairs of fitments together and to a support 19. Feet may be fitted to the fitment.
Patent GB-1080907-A (GB)
Title: Alkali-soluble cindensation products and their production
Inventor: HERTEL OTTO
IPC: D06P1/56
Filed: 1964-12-16
Abstract: An alkali-soluble condensation product is prepared by reacting together in an acid aqueous medium (a) 1 to 5 molar equivalents of an aromatic hydroxy compound which is free from carboxyl groups (b) 0.1 to 0.5 molar equivalents of a lower alkyl (C1-C6) ether of dimethyolurea or a dimethyol compound of an aliphatic linear or cyclic urea derivative (c) 1 to 6 molar equivalents of an aromatic hydroxycarboxylic acid, an aliphatic dicarboxylic or hydroxy-dicarboxylic acid or an aryloxy fatty acid and (d) 5 to 11 molar equivalents of formaldehyde or a formaldehyde donor.  The reaction is preferably carried out at 30 DEG  C. to the boiling point of the composition.  Many monohydric and polyhydric phenols are specified including monohydroxy and polyhydroxy compounds of diarylsulphones.  Suitable compounds (b) are the dimethyl ether of dimethyolurea, dimethylolmethyl urea, dimethyol-N,N1-dimethylurea, dimethylolethyleneurea, dimethylolpropyleneurea, (di - N,N1 - methylol) 1 - 2 - ureylene-ethylene glycol and bis-(1,2-ureylene) ethanedimethylolate. Salicylic, gallic, malonic, malic, glutaric and phenoxyacetic acids are the specified acids (c) and the formaldehyde may be in the free form or in the form of formaldehyde donors such as 1,3,5-trioxane, paraformaldehyde and hexamethylenetetramine.  The condensation product is prepared by first reacting the aromatic hydroxy compound with formaldehyde and then reacting this product with the acid and urea derivative or by reacting the components (a) to (d) together.  The products are useful as laking agents for basic dyes.  A flexographic printing ink is prepared by dissolving a copolymer of styrene and diethyl maleate in a mixture of ethanol and ethylene glycol to which is then added a basic dye such as Rhodamine B and a resin product prepared as above which is the reaction product of (1) p-tertiary - butylphenol, formaldehyde salicylic acid and dimethylolurea dimethyl ether (2) as (1) but using malic acid instead of salicylic acid and (3) as (1) but using 4,41-dihydroxydiphenyl sulphone instead of p-tertiary butyl phenol. Other dyes such as Rhodamine BA, auramine benzene sulphonate, Victoria Blue B and malachite green may also be used.
Patent GB-1106825-A (GB)
Title: Improvements in and relating to hypodermic syringes
Inventor: SHARP ERIC HAROLD
IPC: A61M5/315
Filed: 1965-12-02
Abstract: 1,106,825. Hypodermic syringes. LONG & HAMBLY Ltd. 19 Oct., 1966 [2 Dec., 1965], No. 51162/65. Heading A5R. [Also in Divisions F1 and F2] A plastics plunger member 15, to be fitted on to the piston rod 14 of an hypodermic syringe, is formed with a bore 21 in which is a groove 22 adapted to retain the end 17 of the piston rod 14, and is formed in its outer surface with a circumferential groove 24. to increase the flexibility of the member. The plastics material of the plunger member is exemplified and the piston rod 14 and syringe barrel 11 are also of a plastics material, the syringe barrel being transparent. A needle may be fitted to the nozzle 13.
Patent GB-1360514-A (GB)
Title: Photographic materials
IPC: G03C8/52
Filed: 1971-11-04
Abstract: 1360514 Diffusion transfer process and materials therefor EASTMAN KODAK CO 4 Nov 1971 [9 Nov 1970] 51378/71 Heading G2C A photographic dye image receiving element comprises a support successively coated with a colour developing agent scavenger layer consisting of a silver halide emulsion and a non- diffusible coupler, a light reflecting layer and a dye image receiving layer. Such elements form part of a film unit conventionally comprising, a photo-sensitive element containing a silver halide emulsion and a non-diffusible coupler and a rupturable container of alkaline processing liquid for insertion between the photo-sensitive and the receiving elements after exposure. The scavenger layer prevents stains appearing in the receiving layer after stripping from the photo-sensitive element by oxidation of unused colour developer with the exposed and fogged silver halide followed by subsequent reaction of the oxidized developer with the coupler to give a non-diffusible product, which product is masked by the light reflecting layer. The silver halide emulsion in the scavenger layer may be either panchromatic, unsensitized or prefogged so as to be spontaneously developable. The scavenger is also arranged to be developed after the image recording layer. The non-diffusible couplers in the photo-sensitive element may be either of the DYE-LINK- (COUP-BALL)n or the BALL-LINK -(COUP-SOL)n type. An interlayer may be provided in the photo-sensitive element which scavenges oxidized developing agent to give a non-diffusible product by reaction with a coupler distributed in a hydrophilic polymer layer. The developing agent may either be present in the rupturable container or in one of the photosensitive layers as a salt. The light reflecting layer preferably contains titanium dioxide as opacifier. The photo-sensitive element may contain several silver halide emulsion layers so as to give multi-colour images. The silver halide emulsion layers may be direct-positive.
Patent GB-1496901-A (GB)
Title: Tools for turning components such as screw heads and nuts
IPC: B25B13/28
Filed: 1974-11-27
Abstract: 1496901 Spanners and wrenches LACREX BREVETTI SA 27 Nov 1974 [1 Feb 1974] 51403/74 Heading B3N A spanner or wrench comprises an elongated handle 1 having a head 2 at one end and pivoted thereto at 8 about an axis perpendicular to the wrenching axis. The head may be locked in the pivoted position by catches 13 engaging flats 12 and comprises a closed loop pivoted at 5 within forked nose member 6, nose 7 engaging the workpiece in use. The loop may be in the form of an irregular hexagon (not shown). A further pivoted head 2<SP>1</SP> may, as shown, be provided at the other end of handle 1 and comprises a pair of jaws 15 and 16, sliding jaw 16 being moved relatively to fixed jaw 16 by a rack and pinion teeth arrangement 25-27, 17..20 on the jaw and on support 14 so that pivoted movement of jaws 15, 16 about axis 5 on support 14 causes relative movement of the jaws. The heads 2, 2<SP>1</SP> may be detachable and interchangeable
Patent GB-1489198-A (GB)
Title: Aerosol hair spray delivery device
IPC: B65D83/14
Filed: 1974-11-27
Abstract: 1489198 Pressurized aerosol dispensers S C JOHNSON & SON Inc 27 Nov 1974 [29 Nov 1973] 51482/74 Heading F1R An aerosol hair spray delivery device comprises a discharge head having an elongated recessed surface 16 and a discharge conduit in an actuator member 30 terminating in a discharge orfice 26 near the centre of the recess and aligned to discharge a spray away from the surface 16. The discharge conduit is designed to give a low force spray discharge. The head is complementary in shape and size to a convex portion of a human head.
Patent GB-1341312-A (GB)
Title: Musical box movement
IPC: G10F1/06
Filed: 1971-11-05
Abstract: 1341312 Automatic musical instruments SANKYO SEIKI SEISAKUSHO KK 5 Nov 1971 [25 Dec 1970] 51542/71 Heading G5J A musical box movement for playing a musical tape comprises a horizontal shaft 13, Fig. 3, provided with axially spaced pinned discs 14 free to rotate relative to the shaft, the pins 14<SP>1</SP> on said discs being controlled by perforations in the musical tape a to strike the reeds of a reed plate 3, a second shaft above and parallel to the horizontal shaft 13 has a pressure roller 11 to grip the musical tape and advance it through the music box under the action of a motor which drives one of the shafts, said shafts being connected by a gearing mechanism. The pinned discs are separated from one another by means of synthetic resin spacers which are fixed to the shaft and which are in frictional engagement with the pinned discs which each possess four circumferentially mounted pins. When a hole in tape a registers with a pin 14<SP>1</SP> it allows the spacers to frictionally rotate the corresponding disc 14 so that another of the pins thereon engages the corresponding reed on plate 3. The pressure roller mounted on the second shaft is provided with axially-spaced annular grooves to accommodate the pins of the pinned discs and axially-spaced lands which are each in contact with a corresponding spacer disc on the horizontal shaft. Upon inserting the tape a into the musical box the plate 7 is urged upwards against the spring 27 when the tape makes contact with the member 25. This allows the pinned discs, which are held in their rest position by the comb-like end 24 of the plate 7, to rotate freely. At the same time the tape also causes the contacts of a switch to close such that the motor which drives the shafts is turned on.
Patent GB-1441518-A (GB)
Title: Method of recovering a non-alluvial deposit situated on land
IPC: E02F1/00
Filed: 1974-11-29
Abstract: 1441518 Dredging SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 29 Nov 1974 [20 Dec 1973] 51765/74 Heading E1F A non-alluvial deposit, e.g. coal, tar sands or oil shales, situated below an overburden 3 is recovered by creating a lake over an area 14 of the overburden, dredging the overburden within the area 14 to expose part of the non-alluvial deposit, and dredging the exposed non-alluvial deposit. The lake may be retained by a dike or by the walls of a previously dug basin and the overburden dredged from the area 14 may be used to build a dike 16. After the non-alluvial deposit lying below the area 14 has been removed, that part of the dike 13 situated between the area 14 and an area 18 enclosed by the dike 16 is removed by dredging action. Consequently water will flood the area 18 so as to allow the overburden and non-alluvial deposit within the area 18 to be removed by dredging action. In a further embodiment a dredge is used to create a flooded area by removing part of a river bank. The dredge is then moved into the flooded area and the area sealed off by building a dike. The non-alluvial deposit is then recovered in the manner described above.
Patent GB-1373115-A (GB)
Title: Crates for bottles or the like
IPC: B65D1/24
Filed: 1971-11-09
Abstract: 1373115 Bottle crates SVEIN STROMBERG & CO AS 9 Nov 1971 [9 Nov 1970] 52014/71 Heading B8P To enable a bottle to be removed from any one of a number of stacked crates at least one wall of each crate has a sliding locking bar 8 connected to partition members 5 so that on raising the bar the partitions are also raised and a bottle can be tilted and removed. The bar slides in guides 6 in the corresponding crate wall. The framework can be guided on the inside of the crate walls or ribs on the inside of the crate walls separate the outer bottles and the partitions separate only the residual bottles. The bar 8 and/or the partitions may have means locking them in the raised and in the lowered positions. An opening can be provided in two opposite sides of the crate.